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Finding the Fourth Proportional to 52,757.64, 72,805.56 and 28,885.86

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Solution

The fourth proportional to 52,757.64, 72,805.56 and 28,885.86 is: 39,862.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,757.64 : 72,805.56 = 28,885.86 : x
  2. Step 2: Convert to fraction form
    52,757.64/72,805.56 = 28,885.86/x
  3. Step 3: Cross multiply
    52,757.64x = 72,805.56 × 28,885.86
  4. Step 4: Simplify right side
    52,757.64x = 2,103,051,213.38
  5. Step 5: Solve for x
    x = 2,103,051,213.38/52,757.64
  6. Step 6: Final answer
    x = 39,862.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.